Display for a tester device



FIG. 1 is a front elevational view of a display for a tester device showing first embodiment of our design, in an unenergized condition.

FIG. 2 is a front elevational view of a display for a tester device showing a second way to practice the first embodiment of our design, in an unenergized condition; and,

FIG. 3 is a front elevational view of a display for a tester device showing a third way to practice the first embodiment of our design, in an unenergized condition.

The display is conventionally flat and of no appreciable thickness.

The broken line display screen in each of the drawings is shown for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a display for a tester device, as shown and described. 